| 527471 | Jan 21, 2003 | Jan 21, 2003 | Encore Operating, L.P. | Ford, W.t."b" #110300302048 | 5,608 |
| 527471Amendment | Jan 21, 2003 | Jan 21, 2003 | Encore Operating, L.P. | Ford, W. T. "B" #110300302048 | 5,608 |
| 527110 | Jan 15, 2003 | Jan 15, 2003 | Minihan Oil & Gas Corporation | University Consolidated V #26W00335433 | 7,136 |
| 540351 | Jan 8, 2003 | Jan 8, 2003 | Range Production Company | West Fuhrman-Mascho Unit #17700339203 | 4,900 |
| 526921 | Jan 7, 2003 | Jan 7, 2003 | XTO Energy Inc. | University "9" -B- #200305165 | 5,800 |
| 526769 | Dec 31, 2002 | Dec 31, 2002 | Brown, H.L. Operating, L.L.C. | Cascade "D" #100333966 | 7,000 |
| 526756 | Dec 31, 2002 | Dec 31, 2002 | Oilfield Management, Inc. (A) | University 37 #100310760 | 12,580 |
| 526429 | Dec 18, 2002 | Dec 18, 2002 | Pure Resources, L.P. | Dollarhide Unit #4015E00303580 | 10,097 |
| 526276 | Dec 11, 2002 | Dec 11, 2002 | Encore Operating, L.P. | Gray, Columbus et Al #190700306337 | 9,500 |
| 526253 | Dec 11, 2002 | Dec 11, 2002 | Encore Operating, L.P. | Gray, Columbus et Al #220600306356 | 9,500 |
| 526249 | Dec 11, 2002 | Dec 11, 2002 | Encore Operating, L.P. | Gray, Columbus et Al #210600306355 | 9,500 |
| 526183 | Dec 10, 2002 | Dec 10, 2002 | Amerind Oil Company, Ltd. | Cowden "F" #100332763 | 8,273 |
| 526018 | Dec 5, 2002 | Dec 5, 2002 | Minihan Oil & Gas Corporation | Phillips University 11-A #700339028 | 7,600 |
| 526017 | Dec 5, 2002 | Dec 5, 2002 | Minihan Oil & Gas Corporation | Phillips University O #500339031 | 7,600 |
| 526014 | Dec 5, 2002 | Dec 5, 2002 | Minihan Oil & Gas Corporation | University 15-11 #200339032 | 7,600 |
| 526014Amendment | Dec 5, 2002 | Dec 5, 2002 | Minihan Oil & Gas Corporation | University 15-11 #200339032 | 8,200 |
| 526013 | Dec 5, 2002 | Dec 5, 2002 | Minihan Oil & Gas Corporation | University Southern Minerals #700339030 | 7,600 |
| 526012 | Dec 5, 2002 | Dec 5, 2002 | Minihan Oil & Gas Corporation | University Southern Minerals #600339029 | 7,600 |
| 525883 | Nov 26, 2002 | Nov 26, 2002 | XTO Energy Inc. | State University -AU- #4HH00302889 | 11,850 |
| 525823 | Nov 26, 2002 | Nov 26, 2002 | Bass Enterprises Production Co. | University 39 #100339027 | 13,000 |
| 525396 | Nov 20, 2002 | Nov 20, 2002 | Sage Energy Company | Logsdon, C. W. #800339026 | 4,800 |
| 525640 | Nov 19, 2002 | Nov 19, 2002 | Occidental Permian Ltd. | Midland Farms AK -A- #20100310164 | 12,480 |
| 525395 | Nov 18, 2002 | Nov 18, 2002 | Sage Energy Company | Logsdon, C. W. "B" #18I00339025 | 4,800 |
| 525394 | Nov 18, 2002 | Nov 18, 2002 | Sage Energy Company | Logsdon, C. W. "B" #19I00339024 | 4,800 |
| 524602 | Nov 15, 2002 | Nov 15, 2002 | Ica Energy Operating, L.L.C | Ica University 1013 #100339022 | 7,300 |
| 525237 | Nov 5, 2002 | Nov 5, 2002 | Phillips Petroleum Company | Goldsmith Andector Unit #N 200339023 | 6,050 |
| 525036 | Nov 1, 2002 | Nov 1, 2002 | Blanco Oil Co. | Blanco-Fullerton #14D00339021 | 8,400 |
| 524783 | Oct 30, 2002 | Oct 30, 2002 | Saga Pet. Ltd Liability Co of Co | University 30 #1L00301442 | 11,215 |
| 525032 | Oct 29, 2002 | Oct 29, 2002 | Blanco Oil Co. | Blanco-Fullerton #16D00306744 | 8,400 |
| 524927 | Oct 24, 2002 | Oct 24, 2002 | XTO Energy Inc. | University Block 9/Wolfcamp/Unit #9E00339020 | 9,500 |
| 524920 | Oct 24, 2002 | Oct 24, 2002 | Occidental Permian Ltd. | Midland Farms Deep Unit #13200334951 | 12,130 |
| 524863 | Oct 22, 2002 | Oct 22, 2002 | Triumph Exploration, Inc. | Clampett, Jed #1000339018 | 4,900 |
| 524862 | Oct 22, 2002 | Oct 22, 2002 | Triumph Exploration, Inc. | Clampett, Jed "A" #600339019 | 4,900 |
| 524718 | Oct 22, 2002 | Oct 22, 2002 | XTO Energy Inc. | University Block 9/Penn/Unit #7400338005 | 10,700 |
| 524634 | Oct 17, 2002 | Oct 17, 2002 | Dyad Petroleum Company | Jenkins #100339017 | 11,000 |
| 524593 | Oct 17, 2002 | Oct 17, 2002 | Westport Oil and Gas Company, LP | Andrews Unit #53900339016 | 9,700 |
| 524692 | Oct 16, 2002 | Oct 16, 2002 | Pure Resources, L.P. | U-Tex 36989 #300310119 | 12,640 |
| 524525 | Oct 11, 2002 | Oct 11, 2002 | Minihan Oil & Gas Corporation | University "T" #500339015 | 7,800 |
| 524525Amendment | Oct 11, 2002 | Oct 11, 2002 | Minihan Oil & Gas Corporation | University T #500339015 | 7,600 |
| 524408 | Oct 9, 2002 | Oct 9, 2002 | Citation Oil & Gas Corp. | University J #300310377 | 10,708 |
| 524419 | Oct 8, 2002 | Oct 8, 2002 | Westport Oil and Gas Company, LP | Andrews Unit #53700339014 | 9,700 |
| 524148 | Oct 1, 2002 | Oct 1, 2002 | Minihan Oil & Gas Corporation | Bitler #33W00339010 | 5,000 |
| 524147 | Oct 1, 2002 | Oct 1, 2002 | Minihan Oil & Gas Corporation | Bitler #34W00339011 | 5,000 |
| 524146 | Oct 1, 2002 | Oct 1, 2002 | Minihan Oil & Gas Corporation | Bitler #35W00339012 | 5,000 |
| 524145 | Oct 1, 2002 | Oct 1, 2002 | Minihan Oil & Gas Corporation | Bitler #36W00339013 | 5,000 |
| 523918 | Sep 25, 2002 | Sep 25, 2002 | Henry Petroleum LP | Henry Cowden (Gbsa) Unit #4WS00339009 | 1,650 |
| 523655 | Sep 17, 2002 | Sep 17, 2002 | Range Production Company | West Fuhrman-Mascho Unit #16000339008 | 4,900 |
| 523654 | Sep 17, 2002 | Sep 17, 2002 | Range Production Company | West Fuhrman-Mascho Unit #16100339007 | 4,900 |
| 523526 | Sep 10, 2002 | Sep 10, 2002 | Pure Resources, L.P. | Dollarhide Unit #106 D00304819 | 8,200 |
| 523451 | Sep 6, 2002 | Sep 6, 2002 | Minihan Oil & Gas Corporation | University #300339006 | 4,800 |
| 523272 | Sep 5, 2002 | Sep 5, 2002 | Range Production Company | West Fuhrman-Mascho Unit #16200339000 | 4,900 |
| 523271 | Sep 4, 2002 | Sep 4, 2002 | Range Production Company | West Fuhrman-Mascho Unit #15600339004 | 4,900 |
| 523270 | Sep 4, 2002 | Sep 4, 2002 | Range Production Company | West Fuhrman-Mascho Unit #15500339003 | 4,900 |
| 523269 | Sep 4, 2002 | Sep 4, 2002 | Range Production Company | West Fuhrman-Mascho Unit #15400339002 | 4,900 |
| 523268 | Sep 4, 2002 | Sep 4, 2002 | Range Production Company | West Fuhrman-Mascho Unit #13100339001 | 4,900 |
| 523121 | Sep 4, 2002 | Sep 4, 2002 | Minihan Oil & Gas Corporation | Phillips Universty "O" #400339005 | 7,700 |
| 523303 | Sep 3, 2002 | Sep 3, 2002 | Pure Resources, L.P. | U-Tex 36989 #400336939 | 12,620 |
| 523255 | Aug 30, 2002 | Aug 30, 2002 | Range Production Company | West Fuhrman-Mascho Unit #15900338999 | 4,900 |
| 523254 | Aug 30, 2002 | Aug 30, 2002 | Range Production Company | West Fuhrman-Mascho Unit #15800338998 | 4,900 |
| 523253 | Aug 30, 2002 | Aug 30, 2002 | Range Production Company | West Fuhrman-Mascho Unit #15700338997 | 4,900 |
| 523248 | Aug 30, 2002 | Aug 30, 2002 | Permian Resources, Inc. | Deep Rock #100337169 | 3,000 |
| 523221 | Aug 29, 2002 | Aug 29, 2002 | Occidental Permian Ltd. | Midland Farms Deep Unit #6400310154 | 11,080 |
| 523122 | Aug 28, 2002 | Aug 28, 2002 | Minihan Oil & Gas Corporation | University Southern Minerals #500338996 | 7,800 |
| 522885 | Aug 22, 2002 | Aug 22, 2002 | Blanco Oil Co. | Blanco-Fullerton #10S00338995 | 4,800 |
| 522704 | Aug 19, 2002 | Aug 19, 2002 | Henry Petroleum LP | University 141 #1H00305343 | 3,054 |
| 522706 | Aug 12, 2002 | Aug 12, 2002 | BP America Production Company | Univ. -11- Sec. 1 #10A00336589 | 7,550 |
| 522583 | Aug 8, 2002 | Aug 8, 2002 | Fasken Oil and Ranch, Ltd. | Mfe Unit #10800338994 | 5,500 |
| 520766 | Aug 8, 2002 | Aug 8, 2002 | Encore Operating, L.P. | Ford, W. T. #4500330804 | 5,460 |
| 522490 | Aug 5, 2002 | Aug 5, 2002 | Encore Operating, L.P. | Gray, Columbus #1901E00306381 | 9,900 |
| 522414 | Aug 2, 2002 | Aug 2, 2002 | Westport Oil and Gas Company, LP | Andrews Unit #201E00306802 | 9,300 |
| 521858 | Jul 30, 2002 | Jul 30, 2002 | Henry Petroleum LP | University "I" #100330617 | 4,300 |
| 522151 | Jul 26, 2002 | Jul 26, 2002 | Minihan Oil & Gas Corporation | University "27-11A" #50400306580 | 4,400 |
| 520029 | Jul 25, 2002 | Jul 25, 2002 | Exxon Mobil Corporation | Parker, J. E. #13900338966 | 7,500 |
| 520745 | Jul 23, 2002 | Jul 23, 2002 | Encore Operating, L.P. | Ford, W. T. #4600330816 | 5,862 |
| 521710 | Jul 11, 2002 | Jul 11, 2002 | Pure Resources, L.P. | Dollarhide Silurian Unit #2501S00336394 | 8,725 |
| 521740 | Jul 10, 2002 | Jul 10, 2002 | BP America Production Company | University 11 Section 1 #C 100300438 | 9,100 |
| 521718 | Jul 10, 2002 | Jul 10, 2002 | Pure Resources, L.P. | Dollarhide Silurian Unit #4714S00302660 | 10,120 |
| 521715 | Jul 10, 2002 | Jul 10, 2002 | Pure Resources, L.P. | Dollarhide Sillurian Unit #4014S00303579 | 8,670 |
| 521713 | Jul 10, 2002 | Jul 10, 2002 | Pure Resources, L.P. | Dollarhide Silurian Unit #2612S00304951 | 10,127 |
| 521712 | Jul 10, 2002 | Jul 10, 2002 | Pure Resources, L.P. | Dollarhide Silurian Unit #35100304864 | 10,136 |
| 521711 | Jul 10, 2002 | Jul 10, 2002 | Pure Resources, L.P. | Dollarhide Silurian Unit #40600303567 | 10,006 |
| 521603 | Jul 8, 2002 | Jul 8, 2002 | Range Production Company | Northeast Furhman-Mascho Unit #17700338993 | 4,900 |
| 520068 | Jul 5, 2002 | Jul 5, 2002 | Pure Resources, L.P. | Cowden Estate et Al #1500338967 | 11,650 |
| 520067 | Jul 5, 2002 | Jul 5, 2002 | Pure Resources, L.P. | Cowden Estate et Al #800330385 | 12,169 |
| 520066 | Jul 5, 2002 | Jul 5, 2002 | Pure Resources, L.P. | Cowden Estate et Al #100303801 | 12,338 |
| 521527 | Jul 3, 2002 | Jul 3, 2002 | Range Production Company | West Fuhrman-Mascho Unit #19000338992 | 4,900 |
| 521486 | Jul 1, 2002 | Jul 1, 2002 | Bass Enterprises Production Co. | University B #100338990 | 13,000 |
| 521485 | Jul 1, 2002 | Jul 1, 2002 | Bass Enterprises Production Co. | University 38 BQ #100338991 | 13,000 |
| 521398 | Jun 27, 2002 | Jun 27, 2002 | Preston Exploration LLC | University Lands 3-7 #100338988 | 14,500 |
| 521398Amendment | Jun 27, 2002 | Jun 27, 2002 | Preston Exploration LLC | University Lands 3-7 #100338988 | 14,500 |
| 521397 | Jun 27, 2002 | Jun 27, 2002 | Preston Exploration LLC | University Lands 3-11 #100338989 | 14,500 |
| 521368 | Jun 25, 2002 | Jun 25, 2002 | Fasken Oil and Ranch, Ltd. | Fee "AJ" #100338987 | 6,000 |
| 521296 | Jun 25, 2002 | Jun 25, 2002 | Range Production Company | West Fuhrman-Mascho Unit #18900338986 | 4,900 |
| 521295 | Jun 25, 2002 | Jun 25, 2002 | Range Production Company | West Fuhrman-Mascho Unit #16400338985 | 4,900 |
| 521085 | Jun 19, 2002 | Jun 19, 2002 | Range Production Company | Northeast Fuhrman-Mascho Unit #17800338983 | 4,900 |
| 521084 | Jun 19, 2002 | Jun 19, 2002 | Range Production Company | Northeast Fuhrman-Mascho Unit #17100338984 | 4,900 |
| 521082 | Jun 18, 2002 | Jun 18, 2002 | Range Production Company | West Fuhrman-Mascho Unit #16300338982 | 4,900 |
| 520760 | Jun 17, 2002 | Jun 17, 2002 | Range Production Company | Northeast Fuhrman-Mascho Unit #17600338978 | 4,900 |
| 520965 | Jun 13, 2002 | Jun 13, 2002 | Occidental Permian Ltd. | Holt, O. B. /S/ #90100338359 | 13,047 |
| 520763 | Jun 10, 2002 | Jun 10, 2002 | Range Production Company | West Fuhrman-Mascho Unit #188W00338981 | 4,900 |